EP0768968A1 - Folding bicycle - Google Patents

Folding bicycle

Info

Publication number
EP0768968A1
EP0768968A1 EP95924183A EP95924183A EP0768968A1 EP 0768968 A1 EP0768968 A1 EP 0768968A1 EP 95924183 A EP95924183 A EP 95924183A EP 95924183 A EP95924183 A EP 95924183A EP 0768968 A1 EP0768968 A1 EP 0768968A1
Authority
EP
European Patent Office
Prior art keywords
bicycle according
bicycle
axis
frame
rear wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95924183A
Other languages
German (de)
French (fr)
Other versions
EP0768968B1 (en
Inventor
Thomas Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0768968A1 publication Critical patent/EP0768968A1/en
Application granted granted Critical
Publication of EP0768968B1 publication Critical patent/EP0768968B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B62K15/006—Collapsible or foldable cycles the frame being foldable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/005—Axle suspensions characterised by the axle being supported at one end only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/02—Frames
    • B62K3/10—Frames of single-beam type, i.e. connecting steering head to rear axle

Definitions

  • the invention relates to a bicycle with a lockable, horizontal and arranged on the frame hinge, about the axis of which the hinged frame parts are pivotable after releasing the lock.
  • a bicycle of this type is described for example in DE-A-29 46 532.
  • This bicycle has an upper frame tube, with which the fork holder and the rear axle are held or connected to one another.
  • This frame tube is made in two parts, the two parts being connected to one another via a swivel joint.
  • the seat tube support and the bracket for the bottom bracket, which protrude up or down, are attached to the rear frame part.
  • the achievable swivel angle leads to a reduction in the distance between the front and the rear wheel, but is bought by the rigid fork-handlebar arrangement with an increase in the diagonal length between the rear wheel hub and the foremost handlebar part, so that the wheel is still pivoted is unsuitable for a luggage compartment shot of a car.
  • folding bikes which have a single frame part between the handlebar fork mount and the bottom bracket, which has a hinge which can be locked via a pin or a tension lock, which allows folding movements about a vertical axis or, alternatively, a solution of the pin connection, around which then to be able to transport separate front and rear parts of the folding bicycle.
  • the disadvantages of the last-mentioned folding bicycle as well as of the bicycle mentioned at the outset lie in the low rigidity and associated poor straight-line running, and the low ride comfort perceived as disadvantageous in the case of folding bicycles due to small wheels.
  • DE 37 01 803 AI therefore proposes a bicycle with a foldable frame to which the rear wheel is attached via a rocker arm, which connects the rear wheel to the bottom bracket and which can be pivoted about the axis of the bottom bracket shaft.
  • the rear wheel In order to be able to fold this bicycle, the rear wheel must first be removed, the front wheel removed from the fork and then the rear swing arm pivoted around the bottom bracket in the direction of the front wheel fork, for which purpose the connection of the rear wheel strut to the rear wheel swing arm or the seat tube must be loosened. Even if the rear and front wheel are equipped with quick release hubs, folding or unfolding and upgrading the bike is relatively complex.
  • a folding bike which has a frame which can be folded in the middle, in which the holding device is held on the bottom bracket housing by means of two holding forks by vertical quarter-turn.
  • a swivel arm with two hinges is required, by means of which the front half of the bicycle is to be separated from the rear half of the bicycle and the front half of the bicycle is to be swiveled by 90 ° twice into a parallel position next to the rear half of the bicycle.
  • This wheel also requires extensive work for the reassembly.
  • This object is achieved by a bicycle with the features of claim 1.
  • this bicycle is characterized in that the frame parts can be displaced parallel to one another from their position in one plane by means of a horizontally extendable telescope and / or by swinging arms which can be pivoted about a vertical axis. Only the possibility of using a telescopic joint and / or corresponding swing arm to bring the front half of the bicycle in a parallel offset position with respect to the rear half of the bicycle enables rotation about a horizontal axis up to a position in which the front and rear wheels are parallel to one another be brought into congruent position.
  • the constructively preferred telescopic connection of the frame parts in question is moved apart only before the mutual pivoting of these frame parts, on the other hand pushed together when the bicycle is in the ready-to-drive state, the corresponding frame parts being locked together, preferably via a quick-release fastener.
  • the frame parts for holding the handlebar mount, the bottom bracket and the rear wheel protrude in a star shape from the swivel joint, so that the respective distances from the swivel point to the ends of the frame parts allow the frame rigidity to be optimized.
  • the spar carrying the bicycle seat at the end is also articulated to the pivot point, in such a way that this spar is also pivotable about the axis of rotation.
  • the frame part for holding the handlebar mount and / or the rear wheel is (are) arranged on the end or outside of the telescope or (in each case) one of the rockers.
  • the frame parts in question are located on the longitudinal left and right with respect to the longitudinal axis of the bicycle as end connections to the telescopic parts.
  • the fork for holding the front wheel and / or the frame part for holding the rear wheel are designed with one arm.
  • the one-sided front wheel fork can be arranged on the left with respect to the longitudinal axis of the bicycle and the corresponding rear wheel fork can be located to the right of the rear wheel as part of the frame part in question.
  • the fork and the frame part for holding the rear wheel are preferably bent along their or its longitudinal axis, in particular offset by an amount corresponding approximately to the length of the wheel axis, so that the frame parts in question, with the exception of the bent end pieces, essentially with the wheels in a ready-to-drive state Level.
  • the angular distance, which the frame part of the bottom bracket and the frame part for holding the rear wheel in the swivel joint are unchangeable, preferably in one piece, set, on the other hand, the remaining frame parts are rotatable relative to each other about the horizontal axis of the swivel joint.
  • the chain therefore remains in a tensioned, undissolved state even when the bicycle is pushed together.
  • the frame part in question can move in the direction the wheels are pivoted without a larger packing width being required due to the pivoting.
  • the saddle including the saddle carrier, can preferably be lowered between the respective recesses in the front and rear wheels when the bicycle is folded, in which the two wheels are congruent with one another. This is achieved by means of a corresponding spoke arrangement or cavities between spokes.
  • a reduction in the width of the bicycle which can easily be achieved in practice can already be achieved in that the handlebar is rotated by 90 ° with respect to the fork.
  • a further optimization is possible if the two handlebar halves can be pivoted parallel or at an acute angle to the fork after releasing a lock.
  • the locking preferably has respective shells of the handlebar halves spanning latches.
  • the front of the handlebar halves each have corresponding locking parts by means of which the handlebar halves can be locked together in the folded state. After the handlebar halves have been folded over, they can be prevented from opening again.
  • the handlebar halves (ends) protruding after the handlebars are folded in can serve as a stand (support) which prevents the folded bicycle from tipping over.
  • the telescopic swivel can be locked using a quick-release lock.
  • different constructions are available for the (only) swivel joint of the bicycle: either an identical swivel joint axis for all the frame parts deflected there or next to it a main axis of rotation, which is also the telescopic longitudinal axis, further axes of rotation which are guided in grooves on satellite tracks around the main axis of rotation.
  • stops can also be provided in the swivel joints corresponding to the end operating states - ready to drive or folded - which block the further rotatability of the frame parts in question.
  • Fig. 1 shows a schematic diagram of the invention
  • 1b shows a side view of the swivel joint, both with telescopic swivel joint
  • FIGS. 1c and 1d each show alternative embodiments in
  • 4a is a plan view of a handlebar embodiment
  • the bicycle shown in FIG. 1 has four frame parts which can be pivoted about the axis of a swivel joint 10 in the plane of the drawing, namely a frame part 11 as a connection to the receptacle the handlebar 12 and the one-armed fork or fork arm 13, a further frame part 14 for connecting the bottom bracket 15 to the frame, a frame part 16 for connecting to the rear wheel axle 17 and a frame part 18 as a support for a saddle or a saddle linkage 19
  • the (rear) frame part 16 is also designed as a one-armed fork part or boom.
  • the wheels, namely the front wheel 20 and the rear wheel 21, can be made using standard hub connections, also quick-release fasteners, and in customary sizes. In particular, the wheel shown in FIG.
  • the wheels can be designed as a so-called mountain bike or trekking bike.
  • the wheels preferably each have three spokes 22 and 23, which leave a respective cavity 24 or 25, so that when the frame part 18 is pivoted away, the lateral projections of the saddle 19 can engage in these cavities.
  • the wheel shown has commercially available gear shifts, in particular derailleur gears, as well as brakes, lights, reflectors, etc., not shown, which are prescribed by the Road Traffic Regulations.
  • a telescope 27 can be extended after loosening a quick-action fastener 26, as a result of which the distance between the frame parts 11 and 16 can be increased by displacement in the direction of the double arrow 27 '.
  • the telescopic longitudinal axis is also the axis of rotation for the frame parts 11, 14, 16 and 18.
  • the rotatability of this part is indicated by arrow 28.
  • Any further telescope 29 as a connection between the frame parts 11 and 18 is guided in the partial circular groove of the frame holder of the frame part 11 when the parts 11 and 18 are pivoted relative to one another.
  • the frame parts 18 and 11 can be pivoted in the direction of the arrows 31 and 30 about the swivel joint 10, which is also the telescope 27.
  • the angular distance between the frame parts 14 and 16 remains due to the one-piece construction constant during pivoting, so that the distance of the bottom bracket 15 to the rear axle 17 is maintained and the chain 32 (see Fig. 1) remains tensioned.
  • rocking levers 33 and 34 can also be provided which (see arrow 35) can be pivoted through an angle of 90 ° about a vertical axis. This also results in a relative displacement along the double arrow 27 'of the frame parts 11 and 16 relative to one another.
  • the reference numerals in FIGS. 1c and 1d correspond to the same components or the same functions as explained for FIGS. 1a, 1b.
  • the frame parts 11, 16 and 18 or 14 can be moved into the end position via the position shown in FIG. 2 3 pivot.
  • the two wheels 20 and 21 come into a congruent position, since the increase in distance corresponding to the double arrow 27 'of the frame parts 11 and 16 can be chosen so large that the wheels 20 and 21 can be brought into a parallel offset position.
  • the angular distance between the frame parts 14 and 16 is retained.
  • the handlebar is constructed in two parts and has handlebar halves 37 and 38 which can be pivoted about pivot points 39 and 40 from the position shown in FIG. 4a to the folded-down position according to FIG. 4b.
  • a quick-release fastener 41 over which the relevant shell halves 38 "and 37 'are clamped and locked, is released and then folded down along arrows 42 and 43.
  • the handlebar halves 37 and 38 can still have corresponding locking parts 44 and 45b, which can be locked or latched to one another in the manner shown in Fig. 4.
  • this can be done from the Pedal 46 protruding from the outer contour can be folded inwards by means of a lockable swivel joint 47 on the pedal crank 48.
  • the advantage of the present bicycle is that it can be pushed together in the tightest manner, the longitudinal extension L according to FIG. 3 being essentially determined by the size of the wheels 20, 21 and the distance of the rear axle 17 from the bottom bracket 15.
  • the width is determined by the double tire width, the respective width of the frame parts 11, 16 and their distance, which is required for pivoting the frame part 18 or the saddle 19.
  • the bicycle is preferably manufactured in a lightweight construction, i.e. using composite plastics (e.g. carbon), aluminum parts or chrome-molybdenum alloys.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

A bicycle has a lockable horizontal hinge arranged on the bicycle frame. The articulated parts of the frame may swivel around the axis of the hinge after the hinge is unlocked. The parts (11, 14, 16, 18) of the frame may be moved in a parallel direction in a plane by means of horizontal telescope means (27) and/or levers (33, 34) that can swivel around a vertical axis.

Description

KLAPPFAHRRAD FOLDING BIKE
Fahrradbicycle
Die Erfindung betrifft ein Fahrrad mit einem arretierbaren, horizontal und am Rahmen angeordneten Drehgelenk, um dessen Achse die angelenkten Rahmenteile nach Lösen der Arretierung schwenkbar sind.The invention relates to a bicycle with a lockable, horizontal and arranged on the frame hinge, about the axis of which the hinged frame parts are pivotable after releasing the lock.
Ein Fahrrad dieser Art ist beispielsweise in der DE-A-29 46 532 beschrieben. Dieses Fahrrad besitzt ein oberes Rahmenrohr, mit dem die Gabelhalterung und die Hinterachse gehalten bzw. mit¬ einander verbunden werden. Dieses Rahmenrohr ist zweiteilig gefertigt, wobei die beiden Teile über ein Drehgelenk miteinan¬ der verbunden sind. Die Sattelrohrstütze und die Aufhängung für das Tretlager, die nach oben bzw. nach unten wegragen, sind am hinteren Rahmenteil befestigt. Mit dieser Konstruktion soll es möglich sein, das Vorderrad und das Hinterrad nebeneinander zu verschwenken. Allerdings kann die gewünschte deckungsgleiche Position in der Praxis nicht erreicht werden, weil Vorder- und Hinterrad in derselben Ebene fluchten, ferner das Tretlager und/oder der Lenker eine diesbezügliche Bewegung hemmen. Der erreichbare Schwenkwinkel führt zwar zu einer Verkürzung des Abstandes des Vorder- und des Hinterrades, wird jedoch durch die starre Gabel-Lenkeranordnung mit einer Vergrößerung der diagonalen Länge zwischen der Hinterradnabe und dem vordersten Lenkerteil erkauft, so daß das Rad im verschwenkten Zustand nach wie vor für eine Gepäckraumaufnahme eines Pkw ungeeignet ist.A bicycle of this type is described for example in DE-A-29 46 532. This bicycle has an upper frame tube, with which the fork holder and the rear axle are held or connected to one another. This frame tube is made in two parts, the two parts being connected to one another via a swivel joint. The seat tube support and the bracket for the bottom bracket, which protrude up or down, are attached to the rear frame part. With this construction, it should be possible to swivel the front wheel and the rear wheel side by side. However, the desired congruent position cannot be achieved in practice because the front and rear wheels are aligned in the same plane, and the bottom bracket and / or the handlebars inhibit movement in this regard. The achievable swivel angle leads to a reduction in the distance between the front and the rear wheel, but is bought by the rigid fork-handlebar arrangement with an increase in the diagonal length between the rear wheel hub and the foremost handlebar part, so that the wheel is still pivoted is unsuitable for a luggage compartment shot of a car.
Alternativ hierzu sind Klappräder bekannt, die ein einziges Rahmenteil zwischen der Lenker-Gabelaufnahme und dem Tretlager besitzen, das ein über einen Bolzen oder einen Spannverschluß arretierbares Scharnier aufweist, das Klappbewegungen um eine vertikale Achse erlaubt oder alternativ hierzu eine Lösung der Bolzenverbindung, um die dann getrennten Vorder- und Hinter¬ teile des Klappfahrrades transportieren zu können. Die Nachteile des letztgenannten Klappfahrrades wie auch des eingangs erwähnten Fahrrades liegen in einer geringen Steifig- keit und damit verbundenem schlechten Geradeauslauf sowie dem bei Klappfahrrädern als nachteilig empfundenden geringen Fahr¬ komfort durch kleine Räder.As an alternative to this, folding bikes are known which have a single frame part between the handlebar fork mount and the bottom bracket, which has a hinge which can be locked via a pin or a tension lock, which allows folding movements about a vertical axis or, alternatively, a solution of the pin connection, around which then to be able to transport separate front and rear parts of the folding bicycle. The disadvantages of the last-mentioned folding bicycle as well as of the bicycle mentioned at the outset lie in the low rigidity and associated poor straight-line running, and the low ride comfort perceived as disadvantageous in the case of folding bicycles due to small wheels.
In der DE 37 01 803 AI wird daher ein Fahrrad mit einem faltba¬ ren Rahmen vorgeschlagen, an dem über eine Schwinge das Hinter¬ rad befestigt ist, die das Hinterrad mit dem Tretlager verbin¬ det und die um die Achse der Tretlagerwelle schwenkbar ist. Um dieses Fahrrad zusammenklappen zu können, muß zunächst das Hin¬ terrad ausgebaut, ferner das Vorderrad aus der Gabel entfernt werden und anschließend die Hinterradschwinge um das Tretlager herum in Richtung auf die Vorderradgabel geschwenkt werden, wozu die Verbindung der Hinterradstrebe mit der Hinterrad¬ schwinge bzw. dem Sattelrohr gelöst werden muß. Selbst wenn Hinter- und Vorderrad mit Schnellspann-Naben ausgestattet sind, gestaltet sich das Zusammenklappen bzw. das Auseinanderklappen und Aufrüsten des Fahrrades als relativ aufwendig.DE 37 01 803 AI therefore proposes a bicycle with a foldable frame to which the rear wheel is attached via a rocker arm, which connects the rear wheel to the bottom bracket and which can be pivoted about the axis of the bottom bracket shaft. In order to be able to fold this bicycle, the rear wheel must first be removed, the front wheel removed from the fork and then the rear swing arm pivoted around the bottom bracket in the direction of the front wheel fork, for which purpose the connection of the rear wheel strut to the rear wheel swing arm or the seat tube must be loosened. Even if the rear and front wheel are equipped with quick release hubs, folding or unfolding and upgrading the bike is relatively complex.
Aus der DE 39 26 785 AI ist ein Klapprad bekannt, das einen in der Mitte klappbaren Rahmen besitzt, bei dem die Haltevorrich¬ tung mittels zweier Haltegabeln durch vertikale Vierteldrehung an dem Tretlagergehäuse festgehalten wird. Hierzu wird ein Schwenkarm mit zwei Scharnieren benötigt, mittels denen die vordere Fahrradhälfte von der hinteren Fahrradhälfte getrennt und die vordere Fahrradhälfte durch zweimaliges Schwenken um jeweils 90° in eine parallele Stellung neben der hinteren Fahr¬ radhälfte geschwenkt werden soll. Auch dieses Rad benötigt zur Ummontage aufwendige Arbeiten.From DE 39 26 785 AI a folding bike is known which has a frame which can be folded in the middle, in which the holding device is held on the bottom bracket housing by means of two holding forks by vertical quarter-turn. For this purpose, a swivel arm with two hinges is required, by means of which the front half of the bicycle is to be separated from the rear half of the bicycle and the front half of the bicycle is to be swiveled by 90 ° twice into a parallel position next to the rear half of the bicycle. This wheel also requires extensive work for the reassembly.
Es ist daher Aufgabe der vorliegenden Erfindung, ein Fahrrad der eingangs genannten Art anzugeben, das in leicht handhabba¬ rer Weise auf engsten Raum gebracht werden kann, das im fahrbe¬ reiten Zustand eine optimale (Rahmen-)Steifigkeit besitzt und das konstruktiv einfach aufgebaut ist. Diese Aufgabe wird durch ein Fahrrad mit den Merkmalen nach Anspruch 1 gelöst.It is therefore an object of the present invention to provide a bicycle of the type mentioned at the outset, which can be easily maneuvered into a confined space, which has an optimal (frame) rigidity in the ready-to-drive state and which is of simple construction . This object is achieved by a bicycle with the features of claim 1.
Dieses Fahrrad ist erfindungsgemäß dadurch gekennzeichnet, daß die Rahmenteile über ein horizontal ausfahrbares Teleskop und/oder über um eine vertikale Achse schwenkbare Schwingen aus ihrer Lage in einer Ebene parallel zueinander verschiebbar sind. Erst die Möglichkeit über ein teleskopierbares Gelenk und/oder entsprechende Schwingen die vordere Fahrradhälfte gegenüber der hinteren Fahrradhälfte in eine parallel versetzte Lage zu bringen, ermöglicht die Drehung um eine horizontale Achse bis hin zu einer Stellung, bei der das Vorder- und das Hinterrad parallel zueinander in deckungsgleiche Lage gebracht werden. Die konstruktiv bevorzugte Teleskopverbindung der betreffenden Rahmenteile wird nur vor dem gegenseitigen Ver¬ schwenken dieser Rahmenteile auseinandergefahren, hingegen bei Herstellung des fahrbereiten Zustandes des Fahrrades zusammen¬ geschoben, wobei die entsprechenden Rahmenteile miteinander, vorzugsweise über einen Schnellspannverschluß, verriegelt wer¬ den.According to the invention, this bicycle is characterized in that the frame parts can be displaced parallel to one another from their position in one plane by means of a horizontally extendable telescope and / or by swinging arms which can be pivoted about a vertical axis. Only the possibility of using a telescopic joint and / or corresponding swing arm to bring the front half of the bicycle in a parallel offset position with respect to the rear half of the bicycle enables rotation about a horizontal axis up to a position in which the front and rear wheels are parallel to one another be brought into congruent position. The constructively preferred telescopic connection of the frame parts in question is moved apart only before the mutual pivoting of these frame parts, on the other hand pushed together when the bicycle is in the ready-to-drive state, the corresponding frame parts being locked together, preferably via a quick-release fastener.
Weitere Ausgestaltungen der Erfindung sind in den Unteransprü¬ chen beschrieben.Further refinements of the invention are described in the subclaims.
So stehen von dem Drehgelenk die Rahmenteile zur Halterung der Lenkeraufnahme, des Tretlagers und des Hinterrades sternförmig ab, so daß die jeweiligen Abstände vom Drehgelenkpunkt zu den Rahmenteilenden eine Optimierung der Rahmensteifigkeit erlau¬ ben.Thus, the frame parts for holding the handlebar mount, the bottom bracket and the rear wheel protrude in a star shape from the swivel joint, so that the respective distances from the swivel point to the ends of the frame parts allow the frame rigidity to be optimized.
Vorzugsweise wird der den Fahrradsitz endseitig tragende Holm ebenfalls an dem Drehpunkt angelenkt, und zwar dergestalt, daß auch dieser Holm um die Drehachse verschwenkbar ist.Preferably, the spar carrying the bicycle seat at the end is also articulated to the pivot point, in such a way that this spar is also pivotable about the axis of rotation.
Um die Teleskopausfahrlänge möglichst gering zu halten, ist nach einer weiteren Ausgestaltung der Erfindung vorgesehen, daß der Rahmenteil zur Halterung der Lenkeraufnahme und/oder des Hinterrades endseitig oder außenseitig des Teleskopes oder (jeweils) einer der Schwingen angeordnet ist (sind). Die betreffenden Rahmenteile liegen, anders ausgedrückt, jeweils längsseitig links und rechts in bezug auf die Fahrradlängsachse als endseitige Verbindungen zu den Teleskopteilen.In order to keep the telescopic extension length as short as possible, it is provided according to a further embodiment of the invention that the frame part for holding the handlebar mount and / or the rear wheel is (are) arranged on the end or outside of the telescope or (in each case) one of the rockers. In other words, the frame parts in question are located on the longitudinal left and right with respect to the longitudinal axis of the bicycle as end connections to the telescopic parts.
Eine weitere Reduzierung des Volumens des Fahrrades im zusam¬ mengeklappten Zustand ergibt sich, wenn die Gabel zur Halterung des Forderrades und/oder der Rahmenteil zur Halterung des Hin¬ terrades einarmig ausgeführt werden. Beispielsweise kann die einseitige Vorderradgabel bezogen auf die Fahrradlängsachse links angeordnet sein und die entsprechende Hinterradgabel als Teil des betreffenden Rahmenteiles rechts vom Hinterrad liegen.A further reduction in the volume of the bicycle in the folded state is obtained if the fork for holding the front wheel and / or the frame part for holding the rear wheel are designed with one arm. For example, the one-sided front wheel fork can be arranged on the left with respect to the longitudinal axis of the bicycle and the corresponding rear wheel fork can be located to the right of the rear wheel as part of the frame part in question.
Vorzugsweise sind die Gabel und der Rahmenteil zur Halterung des Hinterrades entlang ihrer oder seiner Längsachse gebogen, insbesondere um eine etwa der Radachsenlänge entsprechendes Maß versetzt, so daß die betreffenden Rahmenteile mit Ausnahme der gebogenen Endstücke im wesentlichen mit den Rädern im fahrbe¬ reiten Zustand in einer Ebene liegen.The fork and the frame part for holding the rear wheel are preferably bent along their or its longitudinal axis, in particular offset by an amount corresponding approximately to the length of the wheel axis, so that the frame parts in question, with the exception of the bent end pieces, essentially with the wheels in a ready-to-drive state Level.
Da das Auflegen und Abnehmen der Kette allein schon wegen der Gefahr des Verschmutzens von Händen und Kleidung unerwünscht ist, ist nach einer weiteren Ausgestaltung der Winkelabstand, den das Rahmenteil des Tretlagers und das Rahmenteil zur Halte¬ rung des Hinterrades im Drehgelenk unveränderbar, vorzugsweise einteilig, eingestellt, hingegen sind die übrigen Rahmenteile gegeneinander um die horizontale Achse des Drehgelenkes ver¬ drehbar. Die Kette bleibt somit auch beim Zusammenschieben des Fahrrades in gespanntem, ungelöstem Zustand.Since placing and removing the chain is undesirable simply because of the risk of dirtying hands and clothing, according to a further embodiment the angular distance, which the frame part of the bottom bracket and the frame part for holding the rear wheel in the swivel joint are unchangeable, preferably in one piece, set, on the other hand, the remaining frame parts are rotatable relative to each other about the horizontal axis of the swivel joint. The chain therefore remains in a tensioned, undissolved state even when the bicycle is pushed together.
Wird der den Fahrradsitz tragende Holm im wesentlichen mittig oder an einer Drehgelenkinnenseite auf der Drehachse des Dreh¬ gelenkes angelenkt, kann der betreffende Rahmenteil in Richtung der Räder verschwenkt werden, ohne daß durch die Verschwenkung eine größere Packbreite benötigt wird. Bevorzugt ist der Sattel einschließlich des Sattelträgers zwischen jeweiligen Ausnehmun¬ gen im Vorder- und im Hinterrad im zusammengeklappten Zustand des Fahrrades, bei dem die beiden Räder deckungsgleich neben¬ einanderliegen, versenkbar. Dies wird durch entsprechende Spei¬ chenanordnung bzw. Hohlräume zwischen Speichen realisiert.If the spar carrying the bicycle seat is articulated essentially in the center or on an inside of the swivel on the axis of rotation of the swivel, the frame part in question can move in the direction the wheels are pivoted without a larger packing width being required due to the pivoting. The saddle, including the saddle carrier, can preferably be lowered between the respective recesses in the front and rear wheels when the bicycle is folded, in which the two wheels are congruent with one another. This is achieved by means of a corresponding spoke arrangement or cavities between spokes.
Eine in der Praxis leicht erzielbare Breitenreduzierung des Fahrrades kann bereits dadurch erreicht werden, daß der Lenker gegenüber der Gabel um 90° verdreht wird. Eine weitere Optimie¬ rung ist möglich, wenn die beiden Lenkerhälften nach Lösen einer Arretierung parallel oder spitzwinklig zur Gabel schwenk¬ bar sind.A reduction in the width of the bicycle which can easily be achieved in practice can already be achieved in that the handlebar is rotated by 90 ° with respect to the fork. A further optimization is possible if the two handlebar halves can be pivoted parallel or at an acute angle to the fork after releasing a lock.
Solche Ausbildungen sind im Prinzip nach dem Stand der Technik bekannt, beispielsweise aus den Unterlagen des DE-Ul-84 27 632. Vorzugsweise weist die Arretierung jeweilige Schalen der Len¬ kerhälften übergreifende Spannverschlüsse auf.Such designs are known in principle according to the state of the art, for example from the documents of DE-Ul-84 27 632. The locking preferably has respective shells of the handlebar halves spanning latches.
Damit das zusammengeklappte Fahrrad beim Tragen nicht auseinan¬ derklappen kann, ist weiterhin vorzugsweise vorzugesehen, daß die Lenkerhälftenvorderseiten jeweils korrespondierende Ver¬ schlußteile aufweisen, über die die Lenkerhälften im zusammen¬ geklappten Zustand aneinander arretierbar sind. Nach Umklappen der Lenkerhälften kann so ein Wiederaufklappen verhindert wer¬ den. Außerdem können nach einer Weiterbildung der Erfindung die nach dem Einklappen des Lenkers vorstehenden Lenkerhälftenrück¬ seiten (-enden) als Standfuß(-stütze) dienen, der ein mögliches Kippen des zusammengeklappten Fahrrades verhindert.So that the folded bicycle cannot unfold when carried, it should preferably be provided that the front of the handlebar halves each have corresponding locking parts by means of which the handlebar halves can be locked together in the folded state. After the handlebar halves have been folded over, they can be prevented from opening again. In addition, according to a development of the invention, the handlebar halves (ends) protruding after the handlebars are folded in can serve as a stand (support) which prevents the folded bicycle from tipping over.
Aus Gründen des Bedienungskomforts ist das Teleskop-Drehgelenk über einen Schnellspannverschluß arretierbar. Für das (einzige) Drehgelenk des Fahrrades bieten sich erfindungsgemäß unter¬ schiedliche Konstruktionen an: Entweder eine identische Drehge¬ lenkachse für alle dort abgelenkten Rahmenteile oder neben einer Hauptdrehachse, die gleichzeitig Teleskoplängsachse ist, weitere Drehachsen, die auf Satellitenbahnen um die Hauptdreh¬ achse in Nuten geführt werden.For reasons of ease of use, the telescopic swivel can be locked using a quick-release lock. According to the invention, different constructions are available for the (only) swivel joint of the bicycle: either an identical swivel joint axis for all the frame parts deflected there or next to it a main axis of rotation, which is also the telescopic longitudinal axis, further axes of rotation which are guided in grooves on satellite tracks around the main axis of rotation.
Schließlich können noch Anschläge in den Drehgelenken entspre¬ chend den endseitigen Betriebszuständen - fahrbereit oder zusammengeklappt - vorgesehen sein, die die weitere Drehbarkeit der betreffenden Rahmenteile blockieren.Finally, stops can also be provided in the swivel joints corresponding to the end operating states - ready to drive or folded - which block the further rotatability of the frame parts in question.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dar¬ gestellt. Es zeigenExemplary embodiments of the invention are shown in the drawings. Show it
Fig. 1 eine Prinzipdarstellung des erfindungsgemäßenFig. 1 shows a schematic diagram of the invention
Fahrrades in einer Seitenansicht,Bicycle in a side view,
Fig. la eine Detail-Draufsicht in Richtung des Pfei¬ les Ia,La a detailed top view in the direction of the pipe Ia,
Fig. lb eine Seitenansicht auf das Drehgelenk, beide mit teleskopierbarem Drehgelenk,1b shows a side view of the swivel joint, both with telescopic swivel joint,
Fig. lc und ld jeweils alternative Ausführungsformen inFIGS. 1c and 1d each show alternative embodiments in
Ansichten entsprechend Fig. la und lb,La and lb,
Fig. 2 und 3 jeweils Seitenansichten des Fahrrades in ver¬ schiedenen Schwenk-Zuständen,2 and 3 each side views of the bicycle in different swivel states,
Fig. 4a eine Draufsicht auf eine Lenker-Ausführungs¬ form und4a is a plan view of a handlebar embodiment and
Fig. 4b dieselbe Ansicht mit abgeklappten Lenkerhälf¬ ten.4b shows the same view with the handlebar halves folded down.
Das in Fig. 1 dargestellte Fahrrad besitzt vier um die Achse eines Drehgelenkes 10 in der Zeichenebene schwenkbare Rahmen¬ teile, und zwar einen Rahmenteil 11 als Verbindung zur Aufnahme des Lenkers 12 und der einarmigen Gabel bzw. des Gabelarmes 13, ein weiteres Rahmenteil 14 zur Verbindung des Tretlagers 15 mit dem Rahmen, ein Rahmenteil 16 zur Verbindung mit der hinteren Radachse 17 und einen Rahmenteil 18 als Stütze für einen Sattel bzw. ein Sattelgestänge 19. Der (hintere) Rahmenteil 16 ist ebenfalls als einarmiges Gabelteil bzw. Gabelbaum ausgeführt. Die Räder, nämlich das Vorderrad 20 und das Hinterrad 21 können über handelsübliche Nabenverbindungen, auch Schnellspannverschlüsse, und in üblichen Größen ausgeführt sein. Insbesondere kann das in Fig. 1 dargestellte Rad als sogenanntes Mountainbike oder auch Trekkingrad ausgebildet sein. Die Räder besitzen vorzugsweise jeweils drei Speichen 22 bzw. 23, die einen jeweiligen Hohlraum 24 bzw. 25 lassen, so daß bei abgeschwenktem Rahmenteil 18 die seitlichen übersstände des Sattels 19 in diese Hohlräume eingreifen können. Im übrigen besitzt das dargestellte Rad handelsübliche Gangschaltungen, insbesondere Kettenschaltungen, sowie nicht dargestellte Brem¬ sen, Beleuchtungen, Reflektoren etc., die von der Straßenver¬ kehrsordnung vorgeschrieben werden.The bicycle shown in FIG. 1 has four frame parts which can be pivoted about the axis of a swivel joint 10 in the plane of the drawing, namely a frame part 11 as a connection to the receptacle the handlebar 12 and the one-armed fork or fork arm 13, a further frame part 14 for connecting the bottom bracket 15 to the frame, a frame part 16 for connecting to the rear wheel axle 17 and a frame part 18 as a support for a saddle or a saddle linkage 19 The (rear) frame part 16 is also designed as a one-armed fork part or boom. The wheels, namely the front wheel 20 and the rear wheel 21, can be made using standard hub connections, also quick-release fasteners, and in customary sizes. In particular, the wheel shown in FIG. 1 can be designed as a so-called mountain bike or trekking bike. The wheels preferably each have three spokes 22 and 23, which leave a respective cavity 24 or 25, so that when the frame part 18 is pivoted away, the lateral projections of the saddle 19 can engage in these cavities. In addition, the wheel shown has commercially available gear shifts, in particular derailleur gears, as well as brakes, lights, reflectors, etc., not shown, which are prescribed by the Road Traffic Regulations.
Erfindungsgemäß und wie im Detail aus Fig. 1 ersichtlich, kann nach Lösen eines Schnellspannverschlusses 26 ein Teleskop 27 ausgefahren werden, wodurch der Abstand der Rahmenteile 11 und 16 durch Verschiebung in Richtung des Doppelpfeiles 27' vergrö¬ ßerbar ist. Die Teleskoplängsachse ist gleichzeitig Drehachse für die Rahmenteile 11, 14, 16 und 18. Die Drehbarkeit dieser Teiles ist durch Pfeil 28 angedeutet. Ein ggf. weiteres Tele¬ skop 29 als Verbindung zwischen den Rahmenteilen 11 und 18 wird in Teilkreisnut der Rahmenaufnahme des Rahmenteiles 11 bei gegenseitigem Verschwenken der Teile 11 und 18 geführt.According to the invention and as can be seen in detail from FIG. 1, a telescope 27 can be extended after loosening a quick-action fastener 26, as a result of which the distance between the frame parts 11 and 16 can be increased by displacement in the direction of the double arrow 27 '. The telescopic longitudinal axis is also the axis of rotation for the frame parts 11, 14, 16 and 18. The rotatability of this part is indicated by arrow 28. Any further telescope 29 as a connection between the frame parts 11 and 18 is guided in the partial circular groove of the frame holder of the frame part 11 when the parts 11 and 18 are pivoted relative to one another.
Wie aus Fig. lb ersichtlich, können die Rahmenteile 18 sowie 11 in Richtung der Pfeile 31 bzw. 30 um das Drehgelenk 10, das gleichzeitig Teleskop 27 ist, verschwenkt werden. Der Winkelab¬ stand zwischen den Rahmenteilen 14 und 16 bleibt aufgrund der einteiligen Bauweise während des Verschwenkens konstant, so daß der Abstand des Tretlagers 15 zu Hinterachse 17 erhalten und die Kette 32 (siehe Fig. 1) gespannt bleibt.As can be seen from FIG. 1b, the frame parts 18 and 11 can be pivoted in the direction of the arrows 31 and 30 about the swivel joint 10, which is also the telescope 27. The angular distance between the frame parts 14 and 16 remains due to the one-piece construction constant during pivoting, so that the distance of the bottom bracket 15 to the rear axle 17 is maintained and the chain 32 (see Fig. 1) remains tensioned.
Alternativ zu der Teleskopausführung nach Fig. la, lb können auch Schwinghebel 33 und 34 vorgesehen sein, die (siehe Pfeil 35) um einen Winkel von 90° um eine Vertikalachse schwenkbar sind. Auch hierdurch ergibt sich eine Relativver¬ schiebung entlang des Doppelpfeiles 27' der Rahmenteile 11 und 16 gegeneinander. Im übrigen entsprechen die Bezugszeichen in Fig. lc und ld denselben Bauteilen bzw. denselben Funktionen wie zu Fig. la, lb erläutert.As an alternative to the telescopic design according to FIGS. 1 a, 1 b, rocking levers 33 and 34 can also be provided which (see arrow 35) can be pivoted through an angle of 90 ° about a vertical axis. This also results in a relative displacement along the double arrow 27 'of the frame parts 11 and 16 relative to one another. Otherwise, the reference numerals in FIGS. 1c and 1d correspond to the same components or the same functions as explained for FIGS. 1a, 1b.
Nach Lösen des Schnellverschlusses 26 durch Aufklappen in Rich¬ tung des Pfeiles 36 (siehe Fig. la) und Teleskopieren des Tele¬ skopgelenkes 27 lassen sich die Rahmenteile 11, 16 und 18 bzw. 14 über die in Fig. 2 dargestellte Stellung in die Endstellung nach Fig. 3 verschwenken. Hierbei kommen die beiden Räder 20 und 21 in eine kongruente Lage, da die Abstandsvergrößerung entsprechend Doppelpfeil 27' der Rahmenteile 11 und 16 so groß gewählt werden kann, daß die Räder 20 und 21 in eine Parallel- Versatzstellung gebracht werden können. Der Winkelabstand zwi¬ schen den Rahmenteilen 14 und 16 bleibt hierbei erhalten.After releasing the quick-release fastener 26 by opening it in the direction of the arrow 36 (see FIG. 1 a) and telescoping the telescopic joint 27, the frame parts 11, 16 and 18 or 14 can be moved into the end position via the position shown in FIG. 2 3 pivot. Here, the two wheels 20 and 21 come into a congruent position, since the increase in distance corresponding to the double arrow 27 'of the frame parts 11 and 16 can be chosen so large that the wheels 20 and 21 can be brought into a parallel offset position. The angular distance between the frame parts 14 and 16 is retained.
Nach einer weiteren Ausgestaltung ist der Lenker zweiteilig aufgebaut und besitzt Lenkerhälften 37 und 38, die um Dreh¬ punkte 39 und 40 von der in Fig. 4a dargestellten Stellung in die abgeklappte Stellung nach Fig. 4b schwenkbar sind. Hierzu wird ein Schnellspannverschluß 41, der betreffende Schalenhälf¬ ten 38" und 37' im gespannten Zustand übergreift und arretiert, gelöst und anschließend das Abklappen entlang der Pfeile 42 und 43 vollzogen. Am freien Lenkerende können die Lenkerhälften 37 und 38 noch korrespondierende Verschlußteile 44 und 45 aufwei¬ sen, die in der in Fig. 4b dargestellten Weise miteinander ver¬ riegelbar bzw. einrastbar sind. Um ein möglichst schmales Pack¬ maß im eingeklappten Zustand zu realisieren, kann das aus der Außenkontur herausstehende Pedal 46, mittels eines arretierba¬ ren Drehgelenkes 47 an der Tretkurbel 48 nach innen eingeklappt werden.According to a further embodiment, the handlebar is constructed in two parts and has handlebar halves 37 and 38 which can be pivoted about pivot points 39 and 40 from the position shown in FIG. 4a to the folded-down position according to FIG. 4b. For this purpose, a quick-release fastener 41, over which the relevant shell halves 38 "and 37 'are clamped and locked, is released and then folded down along arrows 42 and 43. At the free handlebar ends, the handlebar halves 37 and 38 can still have corresponding locking parts 44 and 45b, which can be locked or latched to one another in the manner shown in Fig. 4. In order to achieve the smallest possible pack size when folded, this can be done from the Pedal 46 protruding from the outer contour can be folded inwards by means of a lockable swivel joint 47 on the pedal crank 48.
Der Vorteil des vorliegenden Fahrrades besteht darin, daß es in dichtester Weise zusammenschiebbar ist, wobei die Längser¬ streckung L entsprechend Fig. 3 im wesentlichen durch die Größe der Räder 20, 21 sowie dem Abstand der Hinterachse 17 vom Tret¬ lager 15 bestimmt ist. Die Breite (Ausdehnung in senkrechter Richtung zur Fig. 3) wird bestimmt durch die doppelte Reifen¬ breite sowie die jeweilige Breite der Rahmenteile 11, 16 und deren Abstand, der zum Abschwenken des Rahmenteiles 18 bzw. des Sattels 19 benötigt wird.The advantage of the present bicycle is that it can be pushed together in the tightest manner, the longitudinal extension L according to FIG. 3 being essentially determined by the size of the wheels 20, 21 and the distance of the rear axle 17 from the bottom bracket 15. The width (extension in the direction perpendicular to FIG. 3) is determined by the double tire width, the respective width of the frame parts 11, 16 and their distance, which is required for pivoting the frame part 18 or the saddle 19.
Vorzugsweise wird das Fahrrad in Leichtbauweise gefertigt, d.h., unter Verwendung von Verbundkunεtstoffen (z.B. Carbon), Aluminiumteilen oder Chrom-Molybdän-Legierungen. The bicycle is preferably manufactured in a lightweight construction, i.e. using composite plastics (e.g. carbon), aluminum parts or chrome-molybdenum alloys.

Claims

Patentansprüche claims
1. Fahrrad mit einem arretierbaren, horizontal und am Rahmen angeordneten Drehgelenk (10), um dessen Achse die ange¬ lenkten Rahmenteile (11, 14, 16, 18) nach Lösen der Arre¬ tierung (26) schwenkbar sind, d a d u r c h g e k e n n z e i c h n e t, daß die Rahmenteile (11, 14, 16, 18) über ein horizontal ausfahrbares Teleskop (27) und/oder über um eine vertikale Achse schwenkbare Schwingen (33, 34) aus ihrer Lage in einer Ebene parallel zueinander verschiebbar sind.1. Bicycle with a lockable, horizontally and on the frame arranged swivel joint (10), about the axis of which the articulated frame parts (11, 14, 16, 18) can be pivoted after releasing the locking means (26), characterized in that the Frame parts (11, 14, 16, 18) can be displaced parallel to one another from their position in one plane by means of a horizontally extendable telescope (27) and / or by means of rockers (33, 34) which can be pivoted about a vertical axis.
2. Fahrrad nach Anspruch 1, dadurch gekennzeichnet, daß von dem Drehgelenk (10) die Rahmenteile (11, 14, 16, 18) zur Halterung der Lenkeraufnahme, des Tretlagers (15) und des Hinterrades (21) sternförmig abstehen.2. Bicycle according to claim 1, characterized in that from the rotary joint (10), the frame parts (11, 14, 16, 18) for holding the handlebar mount, the bottom bracket (15) and the rear wheel (21) protrude in a star shape.
3. Fahrrad nach Anspruch 2, dadurch gekennzeichnet, daß der den Fahrradsitz (19) endseitig tragende Holm (18) endsei¬ tig mit dem Drehgelenk (10) verbunden ist.3. Bicycle according to claim 2, characterized in that the end of the bicycle seat (19) carrying spar (18) is endsei¬ tig with the swivel (10).
4. Fahrrad nach einem der Ansprüche 1 bis 3, dadurch gekenn¬ zeichnet, daß der Rahmenteil (11, 16) zur Halterung der Lenkeraufnahme und/oder des Hinterrades (21) endseitig oder außenseitig des Teleskopes (27) oder (jeweils) einer der Schwingen (33, 34) angeorndet ist (sind).4. Bicycle according to one of claims 1 to 3, characterized gekenn¬ characterized in that the frame part (11, 16) for holding the handlebar mount and / or the rear wheel (21) end or outside of the telescope (27) or (each) one of the Swing (33, 34) is (are) arranged.
5. Fahrrad nach einem der Ansprüche 1 bis 4, dadurch gekenn¬ zeichnet, daß die Gabel (13) zur Halterung des Vorderra¬ des (20) und/oder der Rahmenteil (16) zur Halterung des Hinterrades (21) einarmig ist (sind).5. Bicycle according to one of claims 1 to 4, characterized gekenn¬ characterized in that the fork (13) for holding the Vorderra¬ of (20) and / or the frame part (16) for holding the rear wheel (21) is (with one arm) ).
6. Fahrrad nach Anspruch 5, dadurch gekennzeichnet, daß die Gabel (13) und der Rahmenteil (16) zur Halterung des Hin¬ terrades (21) entlang ihrer oder seiner Längsachse gebogen ist, vorzugsweise um ein etwa der Radachsenlänge entspre¬ chendes Maß versetzt ist (sind). 6. Bicycle according to claim 5, characterized in that the fork (13) and the frame part (16) for holding the rear wheel (21) is bent along its or its longitudinal axis, preferably offset by approximately the length of the wheel axis is (are).
7. Fahrrad nach einem der Ansprüche 1 bis 6, dadurch gekenn¬ zeichnet, daß der Winkelabstand, den das Rahmenteil (14) des Tretlagers (15) und das Rahmenteil (16) zur Halterung des Hinterrades (21) im Drehgelenk (10) unveränderbar ist, vorzugsweise durch einteilige Bauweise, hingegen die übri¬ gen Rahmenteile (11, 18) gegeneinander um eine horizontale Achse verdrehbar sind.7. Bicycle according to one of claims 1 to 6, characterized gekenn¬ characterized in that the angular distance that the frame part (14) of the bottom bracket (15) and the frame part (16) for holding the rear wheel (21) in the swivel joint (10) unchangeable is, preferably by a one-piece construction, on the other hand, the remaining frame parts (11, 18) can be rotated relative to one another about a horizontal axis.
8. Fahrrad nach einem der Ansprüche 1 bis 7, dadurch gekenn¬ zeichnet, daß der den Fahrradsitz (19) tragende Holm (18) im wesentlichen mittig oder an einer Drehgelenkinnenseite auf der Drehachse des Drehgelenkes (10) angelenkt ist.8. Bicycle according to one of claims 1 to 7, characterized gekenn¬ characterized in that the bicycle seat (19) carrying spar (18) is articulated substantially in the center or on an inner side of the swivel on the axis of rotation of the swivel (10).
9. Fahrrad nach einem der Ansprüche 1 bis 8, dadurch gekenn¬ zeichnet, daß der Sattel (19) zwischen jeweiligen Auεneh- mungen (24, 25) im Vorder- und im Hinterrad (20, 21) im zusammengeklappten Zustand des Fahrrades, bei dem die bei¬ den Räder (20, 21) deckungsgleich nebeneinanderliegen, versenkbar ist.9. Bicycle according to one of claims 1 to 8, characterized gekenn¬ characterized in that the saddle (19) between respective Auεneh- takeings (24, 25) in the front and in the rear wheel (20, 21) in the folded state of the bicycle, at which the two wheels (20, 21) lie congruently next to one another can be lowered.
10. Fahrrad nach einem der Ansprüche 1 bis 9, dadurch gekenn¬ zeichnet, daß der Lenker (12) zu kleineren Längenma¬ ßen/überständen zumindest teilweise zusammenklappbar ist.10. Bicycle according to one of claims 1 to 9, characterized gekenn¬ characterized in that the handlebars (12) to smaller Längenma¬ essen / protrusions is at least partially collapsible.
11. Fahrrad nach Anspruch 10, dadurch gekennzeichnet, daß die beiden Lenkerhälften (37, 38) nach Lösen der Arretie¬ rung (41) parallel oder spitzwinklig zur Gabel (13) schwenkbar sind.11. Bicycle according to claim 10, characterized in that the two handlebar halves (37, 38) after loosening the Arretie¬ tion (41) parallel or acute angle to the fork (13) are pivotable.
12. Fahrrad nach Anspruch 11, dadurch gekennzeichnet, daß die Arretierung (41) jeweilige Schalen (37*, 38") der Lenker¬ hälften (37, 38) übergreifende Spannverschlüsse (41) auf¬ weist.12. Bicycle according to claim 11, characterized in that the locking means (41) have respective shells (37 *, 38 ") of the handlebar halves (37, 38) overlapping latches (41).
13. Fahrrad nach einem der Ansprüche 1 bis 12, dadurch gekenn¬ zeichnet, daß die Lenkerhälftenvorderseiten (37, 38) jeweils korrespondierende Verschlußteile (44, 45) aufwei- εen, über die die Lenkerhälften (37, 38) im zusammenge¬ klappten Zustand aneinander arretierbar sind.13. Bicycle according to one of claims 1 to 12, characterized gekenn¬ characterized in that the handlebar halves (37, 38) each have corresponding locking parts (44, 45) εen, via which the handlebar halves (37, 38) can be locked together in the folded state.
14. Fahrrad nach einem der Ansprüche 1 bis 13, dadurch gekenn¬ zeichnet, daß das Teleskop-Drehgelenk (27) über einen Schnellspannverschluß (26) arretierbar ist.14. Bicycle according to one of claims 1 to 13, characterized gekenn¬ characterized in that the telescopic swivel joint (27) via a quick release lock (26) can be locked.
15. Fahrrad nach einem der Ansprüche I bis 14, gekennzeichnet durch eine identische Drehgelenkachse für alle Rahmen¬ teile (11, 14, 16, 18) oder neben einer Hauptdrehachse, die gleichzeitig Teleskoplängsachse ist, weitere Drehach¬ sen, die auf Satellitenbahnen um die Hauptdrehachεe geführt werden vorzugsweise in Nuten oder über an der Drehachse angelenkte Hebel.15. Bicycle according to one of claims I to 14, characterized by an identical hinge axis for all Rahmen¬ parts (11, 14, 16, 18) or in addition to a main axis of rotation, which is also the telescopic longitudinal axis, further axis of rotation, which on satellite orbits around Main axis of rotation are preferably guided in grooves or via levers articulated on the axis of rotation.
16. Fahrrad nach einem der Ansprüche 1 bis 15, dadurch gekenn¬ zeichnet, daß alle Anεchläge in den Drehgelenken entspre¬ chend den endseitigen Betriebεzuεtänden - fahrbereit oder zuεammengeklappt - die weitere Drehbarkeit blockieren.16. Bicycle according to one of claims 1 to 15, characterized gekenn¬ characterized in that all the stops in the swivel joints corresponding to the end operating states - ready to drive or folded - block the further rotatability.
17. Fahrrad nach einem der Anεprüche 1 bis 16, dadurch gekenn¬ zeichnet, daß mindestens ein Pedal (46) mittels eines arretierbaren Drehgelenkes (47) an der Tretkurbel (48) einklappbar ist. 17. Bicycle according to one of claims 1 to 16, characterized in that at least one pedal (46) can be folded in by means of a lockable swivel joint (47) on the pedal crank (48).
EP95924183A 1994-07-06 1995-07-03 Folding bicycle Expired - Lifetime EP0768968B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4423647 1994-07-06
DE4423647A DE4423647A1 (en) 1994-07-06 1994-07-06 bicycle
PCT/DE1995/000893 WO1996001204A1 (en) 1994-07-06 1995-07-03 Folding bicycle

Publications (2)

Publication Number Publication Date
EP0768968A1 true EP0768968A1 (en) 1997-04-23
EP0768968B1 EP0768968B1 (en) 1998-09-09

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ID=6522365

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EP (1) EP0768968B1 (en)
DE (2) DE4423647A1 (en)
ES (1) ES2122643T3 (en)
WO (1) WO1996001204A1 (en)

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Also Published As

Publication number Publication date
EP0768968B1 (en) 1998-09-09
ES2122643T3 (en) 1998-12-16
DE4423647A1 (en) 1996-01-11
WO1996001204A1 (en) 1996-01-18
DE59503536D1 (en) 1998-10-15

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